Chip breaker



Dec. 6, 1927.

H.` ROMAN CHIP BREAKER Filed May 19, '1927 Patented Dec. 6, 1927.

= UN1TED STATES PATENT OFFICE. i

HENRYVROMAN, OF BAY POINT, CALIFORNIA, ASSIGNOR TO YATES-AMERICAN MA- CHINE COMPANY, OF BELOIT, `IN1".SCONSIN, A CORPORATION OF DELAWARE.

CHIP BREAKER.

Application filed May 19,

The present invention has to do with wood working machines, and is particularly concerned with the manner in which the .chip 'breakers associated with the cutter heads of 5 such machines are held yieldingly againstV the work. 'y

The purpose of the invention is to provide a novel air snubber which will hold a chip breaker yieldingly but irmly against the 1o work without rebound or chatter, regardless of any variations occurring in the position of the chip breaker by reason ofrchanges in thedimensions of the Work.

While the foregoing statement is indicative in a general way of the nature oT'l the invention, other objects and advantages will be apparent to those skilled in the-art upon a full understanding of the construction, ar-

rangement and operation of the snubber.

In order that the invention may be readily understood, one form of the same is presented herein. It will be appreciated, however, that the invention is susceptible of embodiment in various other forms.

In the accompanying drawing a chip breaker is shown equipped with the snubber of the invention.

rIhe chip breaker 1() is pivoted at 11 to a matcher plate 12 in which a suitablyfdriven .an cutter head is adapted to be journaled, and

the plate 12 is slidably mounted on two parallel rails 13, whereby to permit the Vcutter head and chip breaker to be shifted as a unit toward or away from the longitudinal axis of the associated wood working machine.

The chip breaker is held against the work,

or, in the absence of any work, against a suitable stop on the matcher plate, by a resiliently yieldable air snubb'er 14.

The snubber 14 includes a cylinder 15 which is pivoted at 16 to the matcher plate, and a hollow piston 17 which is positioned in the cylinder and is provided with'a stein 18 which is pivotally associated at 19 with the chip breaker througha quick release device The space within the cylinder contned by the piston constitutes aV compressible air 1927. Serial No. 192,525.

chamber,l and such chamber is connected with a source 21 of air under pressure by means of a. flexible conduit 22, whereby to positioned in the opening leading from the conduit 22 to the chamber, and .serves to close oliC the conduit when the piston'is 'forced into the cylinder by the chip breaker in yielding, thus causing the air entrapped within the cylinder to function as an air cushion.

The snubber above described constitutes a very efficient yielding support for the chip breaker, and has none of the disadvantages which so often characterize the spring devices used for the' same general purpose.

I claim:

1. The combination with a movable chip breaker, of a snubber for the same havin@ a compressible air chamber which is adapted to be connected with a source of air under pressure.

2. The combination with a movable chip breaker, of 'a snubberfor the same having a Vcompressible air chamber, a port in said chamber adapted to be connected with a source of air under pressure,land a one-way valve in said port for preventing airrfrom liowing from said chamber bac-k to said source when the chamber is compressed.

3. The combination with a matcher-plate and a chip breaker pivotally mounted thereon, of a snubber connecting the matcher plate and the chip breaker and ycomprising a hollow cylinder connected to` one of said members, a piston in the cylinder connected to the other of said members, a port in the cylinder adapted to be connected with a source of air under pressure, and a. one-way kvalve in the portrfor preventing air from flowing from said chamber back to said source when the chamber is compressed.

In testimony whereof I have hereunto subscribed my name.

HENRY ROMAN. 

